Top 10 recommendation bluetooth transmitter car aux

When you looking for bluetooth transmitter car aux, you must consider not only the quality but also price and customer reviews. But among hundreds of product with different price range, choosing suitable bluetooth transmitter car aux is not an easy task. In this post, we show you how to find the right bluetooth transmitter car aux along with our top-rated reviews. Please check out our suggestions to find the best bluetooth transmitter car aux for you.

Product Features Editor's score Go to site
Nulaxy Wireless in-Car Bluetooth FM Transmitter Radio Adapter Car Kit W 1.44 Inch Display Supports TF/SD Card and USB Car Charger for All Smartphones Audio Players Nulaxy Wireless in-Car Bluetooth FM Transmitter Radio Adapter Car Kit W 1.44 Inch Display Supports TF/SD Card and USB Car Charger for All Smartphones Audio Players
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Mpow Bluetooth Adapter with 1 Second Turn On/Off Button, Bluetooth Receiver for 15 Hours Hands-Free Calls and Hi-Fi Music, Quick Charging Bluetooth Aux Adapter(CSR 4.1, Dual Link, Voice Assistant) Mpow Bluetooth Adapter with 1 Second Turn On/Off Button, Bluetooth Receiver for 15 Hours Hands-Free Calls and Hi-Fi Music, Quick Charging Bluetooth Aux Adapter(CSR 4.1, Dual Link, Voice Assistant)
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VicTsing Bluetooth FM Transmitter, Wireless In-Car Radio Transmitter Adapter /w USB Port, Support AUX Input 1.44 Inch Display TF Card Slot - Silver Grey VicTsing Bluetooth FM Transmitter, Wireless In-Car Radio Transmitter Adapter /w USB Port, Support AUX Input 1.44 Inch Display TF Card Slot - Silver Grey
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VicTsing V4.1 Bluetooth FM Transmitter for Car, Wireless Radio Transmitter Adapter with USB Port, Music Player Support Aux Output, TF Card and U-Disk, Hands Free for iPhone, Smartphones VicTsing V4.1 Bluetooth FM Transmitter for Car, Wireless Radio Transmitter Adapter with USB Port, Music Player Support Aux Output, TF Card and U-Disk, Hands Free for iPhone, Smartphones
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Bluetooth FM Transmitter for Car, Wireless Bluetooth FM Radio Adapter Car Kit with Hands-Free Calling and 2 Ports USB Charger 5V/2.4A&1A. Bluetooth FM Transmitter for Car, Wireless Bluetooth FM Radio Adapter Car Kit with Hands-Free Calling and 2 Ports USB Charger 5V/2.4A&1A.
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AGPtek Protable Car Aux Bluetooth Adapter, Bluetooth Receiver for Mp3 Music Streaming Sound Speaker System, Hands free Audio Adapter, Bluetooth Car Kits with 3.5mm Wireless Aux Jack Receiver AGPtek Protable Car Aux Bluetooth Adapter, Bluetooth Receiver for Mp3 Music Streaming Sound Speaker System, Hands free Audio Adapter, Bluetooth Car Kits with 3.5mm Wireless Aux Jack Receiver
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Mini Bluetooth Receiver Audio Adapter V.4.1 3.5mm With Freebies 3.5mm to RCA(Red,White) cable Aux In Jack Wireless And Portable For Car Kits Mini Bluetooth Receiver Audio Adapter V.4.1 3.5mm With Freebies 3.5mm to RCA(Red,White) cable Aux In Jack Wireless And Portable For Car Kits
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Bluetooth Receiver / Car Kit, Esuper Bluetooth Aux Adapter 3.5mm Wireles Audio Stereo Output for Home Audio Music Streaming Sound System( Bluetooth 4.2,A2DP, Hands-free Call ,40feet Bluetooth Range) Bluetooth Receiver / Car Kit, Esuper Bluetooth Aux Adapter 3.5mm Wireles Audio Stereo Output for Home Audio Music Streaming Sound System( Bluetooth 4.2,A2DP, Hands-free Call ,40feet Bluetooth Range)
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[Deal] Bluetooth Auxiliary Adapter for Car, Bluetooth 4.2 Aux Adapter, 3.5mm Mini Bluetooth Receiver with Clip for Headphones, TekHome Wireless Bluetooth Connector Converter for Headset Home Stereo. [Deal] Bluetooth Auxiliary Adapter for Car, Bluetooth 4.2 Aux Adapter, 3.5mm Mini Bluetooth Receiver with Clip for Headphones, TekHome Wireless Bluetooth Connector Converter for Headset Home Stereo.
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(Upgraded Version) Bluetooth FM Transmitter, Sumind Wireless Radio Adapter Hands-Free Car Kit with 1.7 Inch Display, QC3.0 and Smart 2.4A Dual USB Ports, AUX Input/Output, TF Card Mp3 Player (Upgraded Version) Bluetooth FM Transmitter, Sumind Wireless Radio Adapter Hands-Free Car Kit with 1.7 Inch Display, QC3.0 and Smart 2.4A Dual USB Ports, AUX Input/Output, TF Card Mp3 Player
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Reviews

1. Nulaxy Wireless in-Car Bluetooth FM Transmitter Radio Adapter Car Kit W 1.44 Inch Display Supports TF/SD Card and USB Car Charger for All Smartphones Audio Players

Feature

1. THE BEST: Consolidated for customers the best FM Transmitter on the market the Nulaxy KM18 won the market for its quality and superior technology. Use the code: HSJA4PUK for 99% OFF on the Nulaxy Air Vent Car Mount (B07CNCHVM6) when you purchase one or More Nulaxy KM18 FM Transmitter (B018E0I01I).
2. GREAT ADVANTAGES: Compatible with most devices on the market (Apple, Samsung, Xiaomi, Oppo, Sony) you will not have problems with compatibility. Play your favorite songs in the sound of your car through Bluetooth, TF Card, Aux Cable. Advanced noise reduction system will guarantee you a quality crystal clear sound.
3. BIG LCD DISPLAY: Developed with 1.44 inches screen to better visualize your phone calls, musics, car battery voltage. Ideal sized screen to assist drivers without disturbing the experience while driving safely.
4. TECHNOLOGY IN YOUR CAR: With our device you will add in your car: 1) Bluetooth connection; 2) Answer phone calls with a click and safely while driving; 3) Voltmeter function to control the quality of your car battery; 4) 3 different ways to play music in your car and more.
5. VOLTMETER FUNCTION: Safety when driving is our first concern, so we equip our devices with voltmeter. You can now check the car voltage before your trip or daily ride. Battery between 14.8V to 13.4V is high when your car is on and moving. Battery between 12.8V to 12.2V is normal when your car parked and power off. Battery below 12V change the battery as soon as possible.

Description

KM18 fm transmitter is compatible with most devices on the market (Apple, Samsung, Xiaomi, Oppo, Sony) you will not have problems with compatibility. Play your favorite songs in the sound of your car through Bluetooth, TF Card, Aux Cable. Advanced noise reduction system will guarantee you a quality crystal clear sound.

2. Mpow Bluetooth Adapter with 1 Second Turn On/Off Button, Bluetooth Receiver for 15 Hours Hands-Free Calls and Hi-Fi Music, Quick Charging Bluetooth Aux Adapter(CSR 4.1, Dual Link, Voice Assistant)

Feature

QUICK CHARGING TECHNOLOGY: Mpow Bluetooth receiver features a quick-turnaround that gives you 2 HOURS PLAYING TIME from a 5-MINUTE CHARGING. Built-in rechargeable battery provides up to 120 HOURS STANDBY TIME & 15 HOURS AUDIO FEAST after fully charged.
CSR CHIP FOR CD-LIKE MUSIC FEAST: Adopted CSR chip for providing more stable and faster transmission with less power consumption, which can represent a superior audio performance to spoil your ear.
1 SECOND SWITCHING BUTTON: Mpow Bluetooth car aux adapter designed with PHYSICAL ON/OFF SWITCH & HUMANIZED WIDENED VOLUME/TRACK BUTTON on the side for quick and convenient control for your hands-free talking and listening experience.
DOUBLE CONNECTIVITY: With the multipoint technology, Mpow Bluetooth car kit can connect 2 Bluetooth devices at the same time for enjoying your music while won't miss any calls.
WIDE COMPATIBILITY RECEIVER: Stream stereo music wirelessly through most home audio systems, car stereo system, and wired headphones from Bluetooth enabled devices like smartphones, tablets, MP3 players, etc.(HFP/HSP/A2DP/AVRCP/CVC6.0).

Description

Mpow Bluetooth 4.1 Receiver with Quick Charging 5-Min for 2 Hours Hands-free Calling / Hi-Fi Music -- Mpow Smarts Your Life

Quick Charging:
Mpow Bluetooth receiver features a quick-turnaround that gives you 2 hours of playback from a 5-minute charging.
Note1: Please use 5V standard charger to charge Mpow Bluetooth adapter.
Note2: Do not use quick charger/ flash charger/ fast charger with output voltage over 5V.

User-Friendly Switch:
Designed with humanized ON/OFF button and widened volume/track control on the side for quick and convenient control for your talking and listening experience.
Note1: Mpow car adapter will auto-off if it is disconnected for 10 minutes to save energy.
Note2: If you want to turn Mpow off, please kindly turn the switch to off.

Wirelessly Transmit Music Anywhere & Anytime:
Bluetooth 4.1 delivers clear, distortion-free digital audio to wired headphones, speakers up to 33 feet away.
Enjoy crisp wireless tunes when you are on the road or at home, or simply when you want to keep the entertainment for yourself only.

Talk in Clarity and Convenience:
Built-in microphone and multi-point technology allows you to listen to your music and no more worry about missing any calls.

Automatically Re-connection:
When the Bluetooth function of a mobile phone is ON, Mpow Bluetooth aux adapter will connect with the last mobile phone automatically.

Specifications:
Bluetooth Version: V4.1
Frequency Range: 2.4GHz
Output Power Category: Class 2
Bluetooth Mode: HFP/HSP/A2DP/AVRCP
Bluetooth Range: Up to 33 feet
Charge Voltage: DC 5.0V

Package Included:
Mpow Bluetooth Receiver 1
3.5mm Audio Cable 1
3.5 mm Metal Audio Adapter 1
Charging Cable 1
User Manual 1

3. VicTsing Bluetooth FM Transmitter, Wireless In-Car Radio Transmitter Adapter /w USB Port, Support AUX Input 1.44 Inch Display TF Card Slot - Silver Grey

Feature

Wide Compatibility: VicTsing wireless in-car Bluetooth FM Transmitter is well compatible with iPhone 8,iPhone 8 plus, iPhone X, iphone 7 iphone 7 plus, Samsung, HTC, Blackberry, Sony, Tablet and iPad etc.
1.44'' Large LCD Backlight Display Screen: 1.44 inches screen provides clear display: song name, incoming phone number and voltage of the car battery.
Crystal Sound and Memory Function: Adopted advanced interference and noise cancellation technology - CVC technology creates full duplex sound and suppresses noise and wind. Our factory had improved the using experience to reduce interference. Also, our FM transmitter could automatically connect the next time if had been connected before.
Faster Charging STATION: Comes with a 5V-2.1A charging port which can charge most USB devices, better charging performance!( Unable to read USB sticks )
More Surprises: Firstly,Supports hands-free calling with microphone; Secondly, supports TF/Micro SD memory card in FAT format up to 32G; Thirdly, supports A2DP; Fourthly, supports MP3/WMA/FLAC format; support AUX output and input.

Description

Goose Neck Design and 1.44 LCD Display Screen
Flexible metal hose, Convenient to adjust its direction.
Large LCD Screen shows the incoming phone number, current song's name and the voltage of the storage battery clearly.
Easy Installation, Plug and play, Easy to use.

Memory Function
Fast Bluetooth pairing. Once paired, the FM transmitter will automatically connect with the last paired smart device when turned on next time.

Clear Sound and Hand-Free Calling
Adopted advanced interference and noise cancellation technology - CVC technology creates full duplex sound and suppresses noise and wind. Take hands-free calls for pleasurable driving experience!

Specifications:
Bluetooth Version: V3.0 + EDR
Effective Bluetooth Range: 10 meters
FM Frequency: 87.5MHz - 108.0MHZ
Working Voltage: 10V~24V
Audio Input/Output: 3.5mm audio interface
USB Charging Port: 5V/2.1A
Compatible Phone Models: Compatible with iPhone 8,iPhone 8 plus, iPhone X, Samsung, HTC, Blackberry, Sony, Tablet and iPad

NOTE:
1.Please do not violently rotate the head part when using it (the rotation angle shall not exceed 90).
2.Tune it to an unused frequency.
3.The max input & output current of the transmitter varies with charged devices, due to charged devices are able to limit output current automatically.

Package Included:
1x Bluetooth FM transmitter
1x User Manual
1x Audio Cable(1m)

Warranty:
60 days money-back and 12-month, worry-free Guarantee

4. VicTsing V4.1 Bluetooth FM Transmitter for Car, Wireless Radio Transmitter Adapter with USB Port, Music Player Support Aux Output, TF Card and U-Disk, Hands Free for iPhone, Smartphones

Feature

Compact design for safe driving--Built-in microphone frees your hand for calling. Easy to answer/hang up/reject a call/redial the last number/adjust volume via the multifunctional button.Note:To use this device, please press the Call Button for 2s and press the next and previous button to adjust FM frequency.
Three Music Play Modes-- 1.Play music from Bluetooth-enabled devices via FM signal; 2.Stream music from TF card(up to 32GB), supporting music files like MP3, WMA; 3.Transmit music from USB flash disk(up to 32GB).
Dual USB Ports--One is for USB music playing; the other 5V/2.1A USB charging port efficiently gets your IOS or Android device fully charged. Enjoy in-car stereo streaming and charge your smart device at the same time.
Wide Compatibility and Aux Output--Featuring Bluetooth 4.1 technology. It is compatible with iPhone, iPad, iPod, tablet, and Android smart-phones.Note:The Aux Out Port can not stream music from mobile phone, it is used for connecting with your car stereo.
Car Battery Voltage Display--The FM transmitter will display car voltage when plugged into the car cigarette lighter. Enable you to know your car battery state easily. Then it will enter automatic play modes.

Description

Featuring enhanced sound quality and space-saving design, the FM transmitter is a versatile companion that makes your driving safe and pleasant.

Compact and Portable with Dual USB Port
Unlike those bulky transmitters, our FM transmitter is small and space-saving, fitting your car cigarette lighter easily for safe driving.
Stylish appearance with excellent durability makes it a perfect gift choice for your family and friends.
One USB port is for car charge, maximum output is 5V/2.1A. Other USB Port Can Read USB Sticks which can stream music.

Clear Sound with Bluetooth V4.1
Compared with those Bluetooth 3.0 FM transmitters, our Bluetooth 4.1 FM transmitter ensures more stable signal transmission and promotes clarity for enjoying both music and hands-free phone call.

Auto Reconnection
The FM transmitter will automatically connect with the last paired smart device when turned on next time. (Please turn on your smart devices Bluetooth function first, and then turn on the product.)

How to pair
Short Press for 2 second, the display digit will flicker,then press the next or previous tune to adjust the frequency

Specifications:
Bluetooth Version: V4.1
Bluetooth Frequency: 2.402 - 2.480 GHz
FM Frequency: 87.5MHz - 108.0MHZ
Read U-disk (Max capacity): 32GB
Read TF card (Max capacity): 32GB
Effective Range: 5 meters

Package Contents:
Car Bluetooth FM Transmitter 1
3.5mm Audio Cable 1
User Manual 1

5. Bluetooth FM Transmitter for Car, Wireless Bluetooth FM Radio Adapter Car Kit with Hands-Free Calling and 2 Ports USB Charger 5V/2.4A&1A.

Feature

1.PAIR IN SECONDS: Just plug the optimum Bluetooth FM Transmitter into the car cigarette lighter, tune the car radio to the same frequency (range from 87.5 to 108 MHz). Then let your phone/audio player pair it via Bluetooth/USB flash driver.
2.2 PORTS USB CAR CHARGER: Comes with 5V-2.4A and 5V-1A charging ports which output 3.4A total, support charging two devices simultaneously, better-charging performance!
3.ANSWER CALLS HANDS-FREE: High-performance microphone with Noise Suppression (CVC) technology, grants you crystal clear call. Answering/redialing/dismissing or ending a call just simply click a button. Seamlessly switches between incoming calls and music; Drive more safely.
4.IMMERSE IN HiFi MUSIC: Insert a USB flash drive which contains MP3 files into the "RIGHT" USB port and enjoys it. If that's not enough, it can also support your playlist with a full range of audible frequencies with no distortions of the original signal from your MP3, iPhone, Android Smartphones and more Bluetooth enabled devices.
5.WIDE COMPATIBILITY: Bluetooth Car FM Transmitter can be paired as a hands-free kit with all Bluetooth enabled devices, such as iPhone, iPad, Tablet, Samsung, HTC, Sony and other Andriod Smartphones; Stream music and calls directly from your mobile devices to car stereo system via FM radio signal ( 87.5-108.0 MHz).

Description

Top Quality In-Car Wireless Bluetooth professional-grade FM Transmitter
This little gadget with Dual USB Ports Charger, LED digital display screen and Built-In Mic, give you safer, more flexible and convenient driving experience
of hands-free calling, music enjoyment, quick charge.

Specification:
Bluetooth version: JL2.1
Bluetooth Protocol: AVRCP, HFP, A2DP
Screen Display: blue LED digital display
Frequency range: 87.5-108.0MHz
Frequency stability : 10ppml
Product Input: 12-24V
Charger output: 5V/3.4A
Music Format: MP3, WMA
Mic: 4.0MM*1.5MM
USB(Max capacity): 32GB
FM Transmit Distance: about 5 m
Product Weight: 34g
Product DIMENSIONS: L78*Diameter 35mm
Material: ABS

Function:
Built with a high-performance microphone, with Echo Cancellation and Noise Reduction (CVC) technology offers you a crystal clear calling and safer driving.
Two music play mode(pair with the phone via specific Bluetooth or Insert USB Disk into the Right USB Port) let you be absorbed in music playing when driving.
Built in dual USB ports car charger (up to 3.4A total ) and smart charging IC, automatically detects your devices and charges all cellphone or iPad at optimal
speed. Charge two devices simultaneously without damage to the battery.
Super compact and portable design with blue LED digital screen display of FM frequency and car voltage, provides you portable driving travel.

NOTE:
Please NEVER use it in these conditions:
Moist or underwater conditions.
Near heater or high-temperature service.
With direct and strong sunshine.
Never dismantle it without due permission.

Package contents:
1x Bluetooth FM Transmitter with Dual USB Charge Port
1x User Guide

6. AGPtek Protable Car Aux Bluetooth Adapter, Bluetooth Receiver for Mp3 Music Streaming Sound Speaker System, Hands free Audio Adapter, Bluetooth Car Kits with 3.5mm Wireless Aux Jack Receiver

Feature

BLUETOOTH 4.2 TECHNOLOGY -- Compaired with bluetooth 4.0, AGPtek aux bluetooth receiver is super faster pairing your bluetooth devices, and offers higher quality audio sound. Bluetooth range reaches up to 33 feet in open space without obstacles.
WIDE COMPATIBILITY -- AGPtek aux bluetooth adapter is ideal for turning wired stereos and headphones into a Bluetooth-equipped system to receive signals from audio output devices like Android Smartphones, iPhone ,Blackberry, HTC, LG, SONY, Tablets, MP3 Players & more.
SAY GOODBYE TO AUX CORD -- Plug 3.5mm jack into the non-bluetooth device 3.5 port and power on, hold it for 5 seconds, it is on and ready to pair with bluetooth audio output devices. Our bluetooth audio jack adapter works great for streaming music wirelessly and handsfree calling.
SUPER LONG WORKING TIME -- After 2 hours fully charged, you can enjoy music, radio or phone calls about 6 hours continuously. Standby time is about 300 hours.
NOTE -- This AGPtek Bluetooth Receiver doesn't turn on automatically, please long press the button about 5 seconds until the blue light flashes then connect it with your Bluetooth devices. If you want to connect to your TV by pairing the device with your headset, please search transmitter or receiver/transmitter. For Apple Users: If you are having Bluetooth connectivity issues, please try resetting the "Network Connections" Go to SETTINGS >GENERAL >RESET >RESET NETWORK SETTINGS

Description

Plug the car kit into the auxiliary input of your vehicle. If necessary, use the audio dock to relocate your auxiliary input to a more accessible location. Using the car speaker to enjoy music and the phone call. Superior Bluetooth wireless technology allows you to switch between listening to your favorite tunes and making calls on the go! Works with your Bluetooth-enabled Smartphone's, tablet or mp3 player. Enhanced voice detection and noise cancelling microphone makes hands-free calling simple and easy! Compact and simple design - directly plugs into the AUX port on your in-car sound system while keeping a low profile. Auto-pairing makes initial set up hassle free.
Features:
1. 3.5mm audio out.
2. Micro USB charging.
3. Built-in high capacity lithium battery 100mAh.
Specification:
Battery Capacity: 100mAh/3.7V
Bluetooth Version: BT V3.0+EDR
Frequency: 2402MHz-2480MHz
Noise Ratio: >75dB
Dimension: Weight: 10g : 50*45*11.7mm
Package includes:
1. Bluetooth Receiver;
2. User Manual;
3. Micro USB charging cable.
Attention: Please charge your device before first time use. Otherwise some functions will not work.

7. Mini Bluetooth Receiver Audio Adapter V.4.1 3.5mm With Freebies 3.5mm to RCA(Red,White) cable Aux In Jack Wireless And Portable For Car Kits

Feature

ADVANCED BLUETOOTH 4.1 Get high quality audio sound than the Bluetooth 3.0 version, both in playing music and answering calls.
HANDS-FREE CALLINGBuilt-in microphone, its hands-free system can set free your hands during answer the calls and let you safely drive.
TWO-LINK Upgraded Bluetooth technology supporting connect two Bluetooth-enabled devices simultaneously, and gets high quality audio sound, offers a good performance within 30 feet operation range. Ideal for home or vehicle audio systems.
EXTRA-LONG PLAY TIME Built-in battery provides up to 10 hours' play and talk time, 120 hours' standby time, only takes 1.5 hours to fully charge it.
WIDE COMPATIBILITY Compatible with most Bluetooth enabled devices like iPhone, iPod, iPad, Tablets and Other Smartphone, most speakers, TV, and radio, etc.

Description


MINI Bluetooth Receiver V4.1

Get rid of the cord, while driving, easy to listen to music even without stereo, simply click to achieve Hand-free phone call, ensuring your driving safety.

Works with car audio system, iPhone, iPod, iPad, Android Smart phones, Tablets, and other Devices, easily plugs into any powered Car & Home Stereo Sound System and Speakers via the audio cable/adapter.

Attention: Could not use while charging.

8. Bluetooth Receiver / Car Kit, Esuper Bluetooth Aux Adapter 3.5mm Wireles Audio Stereo Output for Home Audio Music Streaming Sound System( Bluetooth 4.2,A2DP, Hands-free Call ,40feet Bluetooth Range)

Feature

Advanced Bluetooth 4.2 Technology Super faster pairing your bluetooth devicesGet higher quality audio sound than Bluetooth V4.0/V3.0, for playing music and answering callsBluetooth range reaches up to 40 feet in open space without obstacles.
Wide Compatibility Esuper bluetooth receiver is ideal for turning wired stereos and headphones into a Bluetooth-equipped system to receive signals from most audio output devices like Android Smartphone's, Apple iPhone ,Blackberry,HTC,LG,SONY,Tablets, MP3 Players & More,Please do not to pair it with Bluetooth speakers / headphones.
Super Long Working Time Just charged this wireless car aux adapter within 2 hours,then it can be fully charged,then you enjoy above to 5 hours nonstop music streaming, radio or phone calls and 300 hours standby time.
Ergonomic Design Esuper bluetooth aux adapter is designed with an emphasis on ergonomics,according to our hands using habit,designed by the smooth and beautiful body line,easily plug in and pull out.Meantime, the compact and lightweight build to easily tuck away and take on your travel,directly plugs into the AUX port on your in- car sound system while keeping a low profile.
Stream Wirelessly Breathe new life into older speakers, headphones, or car stereos by turning them into Bluetooth 4.2-enabled devices;enjoy your music freely. One-year warranty and lifetime support provided by Esuper.

Description

Introduction:
Play music wirelessly from your phone or other bluetooth devices on your home /car stereo system or when driving with this Bluetooth audio receiver.
Enjoy the high-quality audio streaming from your phone or other Bluetooth audio transmitter in CD-quality sound through your speaker.
Freedom to move freely in your house or your car as you listen - conveniently control and stream music from up to 30 feet/10 meters away.

Feature:
3.5mm audio interface, connect AUX directly Easy to install - simply plug it into your stereo, then connect to your device with just one press of a button.
Bluetooth hands-free, safe driving
LED light indicator, play/pause music, answer/drop phone calls, stereo sound, professional experience
Memory pairing, dialed the last number
Multifunctional keyboard (adjust volume conveniently)
Easy operation: You can answer phone calls or control music on the receiver. Change volume, play/pause music, answer/drop calls, redial the last called number with ease.

NOTE:
This receiver doesn't turn on automatically,please long press the MF button about 3 seconds,the blue LED light flashes per 5 seconds when it's connected successfully.

Specification:
Working range: 10mFree space
Frequency: 2.4GHz-2.48GHz
Battery capacity: 100mh/3.7V working time 6 hours Charing time 2 hours
S/N Ratio: 95dB
Working temperature: -10~+50
Size: 5.6x3.6x0.8inches
Unit Weight: 5.3 ounces

Guaranteed reliability:
We believe in our products,that's why we back them all with an 18 months warranty and provide friendly and easy-to-reach support
Please feel free to contact our team for any questions, we will get back to you within 24H
Free lifetime technical support

9. [Deal] Bluetooth Auxiliary Adapter for Car, Bluetooth 4.2 Aux Adapter, 3.5mm Mini Bluetooth Receiver with Clip for Headphones, TekHome Wireless Bluetooth Connector Converter for Headset Home Stereo.

Feature

💖 [Upgraded Again] The upgraded version has increased the default sound volume based on customers' feedback. We will keep updating based on every precious feedback from all our customers.
🎵[Bluetooth 4.2] Bluetooth 4.2 chipset features simultaneous process of 10X data packet, 2.5X streaming speed and noise reduction hands-free calling. 🏆Gold-plated fine copper interface🏆 offers fabulous high-fidelity sound quality than aluminum alloy one of most receivers in the market.
🚗[3-Button Control] 3 ergonomically designed buttons allow you to turn on/off, play/pause, adjust volume/track, answer/reject/end calls at will.
🔊[Wide Compatibility] Compatible with most car audio, wired headphones, dock speakers w/ standard 3.5mm aux-in port.
🔋[Portable] 120mAh battery supports portable use for 5-hour long distance car driving. You can also keep it plugged to charge while using. Bluetooth receiver with clip features convenient placement during outdoor events.

10. (Upgraded Version) Bluetooth FM Transmitter, Sumind Wireless Radio Adapter Hands-Free Car Kit with 1.7 Inch Display, QC3.0 and Smart 2.4A Dual USB Ports, AUX Input/Output, TF Card Mp3 Player

Feature

Intelligent and fast charging: input 12-24 V; Output 2 USB ports: smart 2.4 A charge port which can intelligently identify android or iPhone devices and QC3.0 fast charge port
Special design: large key for easy operation; 1.7 Inch large LCD backlight display song name/ incoming phone number and shows your car's battery level when car start; Can rotate the LCD display screen in 270-degree gooseneck for optimal viewing comfort; Turn off the FM transmitter: long pressing the next song key for 5 seconds, it will turn off the FM and functions keep charging function
Broad compatibility: this radio adapter works with compatible devices, like iPhone, iPad, iPod, tablet, smartphones or MP3 player, you can transfer music in those devices to car audio via 3.5 mm audio cable; Support TF/ Micro SD card in FAT format up to 32G; Support A2DP; Support MP3/ WMA format; Also support AUX output and input
High clear sound and call quality: adopted advanced interference and noise cancellation technology - CVC technology creates full duplex sound and suppresses noise and wind; Built-in microphone feature supports hands-free talking reduce interference
Features v4.2 and EDR: compared to earlier or older versions likeV2.0, V 2.1, or V3.0, V4.2 consumes much less energy and lasts much longer; EDR(Enhanced Data Rate), which ensures a faster data transmission rate and much more stable connection between a device and the audio receiver

Description

Features
Works well with most Bluetooth enabled devices, such as iPhone, iPad, iPod, tablet and smart phones etc.
The radio adapter with wide compatibility can support TF/ Micro SD card in FAT format up to 32G, A2DP, MP3/ WMA format and also AUX output/input.
The device features Bluetooth V4.2 which can save energy and last for much longer and EDR to ensure faster data transmission rate and more stable connection between a Bluetooth device and the audio receiver.

Specifications:
Bluetooth:
Bluetooth vision: V4.2+EDR
Bluetooth frequency: 2.4 GHZ
Sensitivity: -42 db+/3 db 360
Effective range: 5M
RF output: 4 dbm
FM frequency:
FM: 87.5MHZ-108.0MHZ
Effective range: 2 M

Package includes:
1 x In-car Bluetooth FM transmitter
1 x 3.5mm Audio cable
1 x 3A fuse
1 x User manual

Conclusion

By our suggestions above, we hope that you can found the best bluetooth transmitter car aux for you. Please don't forget to share your experience by comment in this post. Thank you!